Detonating-fuse spring.



C. H. J-OCKMUS.

DETONATING FUSE SPRING.

APPLICATION FILED MAR. 20, 1916.

1 ,189,574. Patented July 4, 1916.

* UNITED STATES P ENT CHARLES H. JOQKMUS, F ANSONIA, CONNECTICUT.

DETONATING-FUSE SPRING.

in Detonating-Fuse Springs, of which the following is a specification. This invention relatesto detonating base fuses 'for projectiles, 'more especially to .10 minor caliberi fuses andi-h as for its object to provide springs"for ith'is-class ofpfuses, which shall be perfectly reliable and simple" and inexpensive to produeeras theiy can be blanked out and formed from sheet metal with great rapidity by automatic machinery and the danger of loss-from breakage is practically eliminated. \Viththisand other objects in view.'.l have devised the novel fuse spring which I will nowdescribe, referring to the accompanying drawing forming a part of this specification and using reference charactersto .indicate the several parts."

. Figure 1 is a perspective view of my novel fuse spring ready for assembling; Fig. 2 an elevation corresponding therewith; Fig. 3 a section on the-line 33 in Fig. 2, looking in the direction of the arrows; Fig. 4 a perspective view showing the manner in which the spring is blankedoutv and the half collars areformed, and Fig.5 is a longi-' tudinal section of a wellkno\vntype of standard fuse showing the application there to of my novel spring.

1O denotes the fuse body 11 the cap having threaded engagement therewith, 12 the nipple, 13.a primer thereon, It the firing pin, and 15 the spring as a whole. The spring coniprises a ring 16. having arms17 extending from opposite sides thereof and standing at a slightly acute ;angle thereto,

arms. The en'ti re blariked out frs ample, metal of .O tltlnchness. It is a lequircment that the half'collars be much heavier than the rings and arms are required to be.

I have found in practice that the best results are secured by using metal of approxr mately the thickness stated above for the ring and arms. and by making the bait collars of double thickness, that is. by doubling the metal upon itself to form the half collars.

- I thereforehlank out at the ends of the arms plates having a longitudinal dimension double the width required for the half col- Specification of Letters Patent.

Application filedMal'ch 20, 1916. Serial No. 85,315.

speed. T

' \vitli a head 19 andintermediate tl and pOlflt Wltll an enlargement 20 to give and half collars 1 8 the outer ends of the secured to the-cap bi closing .th

PatentedJu lye, 1910.

lars and of a transverse dimension corre spondingwith the length of the. half collars. and doubling the-metal inward upon itself to form a double thickness after which the so half collars are shaped to the required curvature. The springs are'made ready for use 'by bending the arms toward each-other at a."

slightly acute angle to the plane of the ring,

all of these operationsbeing perforiried by automatic machinery andatii'gh rate "of v The firing pin provider .a

it additional weight. In the assembled position, the arms ll' lll grooves 31 in the enlargement and the half collars ifNlOSL the pin between the weight andthehead.

Fuses of this class are inserted in the bases of theprojectiles and detonate on impact. The projectiles are often lired'atl the rate of 1 50 a minute. have a velocity of 2.00 .feet per second or more. and are expected to pass through a 3/16-inch steel [plate and explodewithin six feet of the plate- The ekplosi'oiigis e tfectcd asf -follo\\'s-' i The centrifugal forceo'ftlie proj'ectilecaiises.' the arms to open t,lia t' .'th'e hez'id-ofi'thc firing pin may pass-betweenfthe*hfalf col lars. lipon impact the velocity of the projectile is checked. and. the firing pinbenig' loose therein. the blow of the' firingpin upon the primer detonates it. and the flame. passii'ig through holes in the cap, ignites the explosion charge of the projectile.

The metal of-the half collars is sullic-iently heavy to retain the firing pin'agaiust the possibility of contact with the primer under the ordinary conditions of hai'idlingand transportation. thus rendering the fuses prer all ordinary conditions. 'ideil' vi hj a c'ircu] l v v rig. "id" g e mct'zl of the cap surrounding the shoulder over the. ring. These details ofconsti uction are not illustrated iii detail. as-thc v are wholly immaterial so faras the presentinvention is concerned. and fuses of this classare in common use.

Having thus described my invention. I claim:

1. A fuse spring of the character deno scribed. formed from sheet metal of uniform th ckness and compr sing a ring, arms extending from opposite sides thereof and bentat an angle thereto, and half collars at the ends of the arms formed by folding the metal upon itself and curving to shape.

2. A fuse spring of the character described, blanked out-from sheet metal of I uniform thickness and. comprising a ring, arms extending from oppositesides thereof and bent at an angle thereto, and plates at the outer ends of the arms which are folded 3. A fuse spring of the character described, blanked out from sheet metal of 1 uniform thickness and comprising'a ring, arms extending from opposite sides thereof and bent. at an angle thereto, and half collars at theouterflends of the arms, said half collars being formed from plates, having a longitudinal dimension double-the width required for the half collars and a transverse dimension corresponding with the length'of the half collars, folded inward upon themselves.

In testimony whereof I afiix my signature. a

CHAS. OCKMUS. 

